US20180245370A1 - Locking device with lockable spindle follower linkage - Google Patents
Locking device with lockable spindle follower linkage Download PDFInfo
- Publication number
- US20180245370A1 US20180245370A1 US15/964,055 US201815964055A US2018245370A1 US 20180245370 A1 US20180245370 A1 US 20180245370A1 US 201815964055 A US201815964055 A US 201815964055A US 2018245370 A1 US2018245370 A1 US 2018245370A1
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- United States
- Prior art keywords
- pin
- locking device
- locking block
- elongate hole
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
- E05B17/2007—Securing, deadlocking or "dogging" the bolt in the fastening position
- E05B17/203—Securing, deadlocking or "dogging" the bolt in the fastening position not following the movement of the bolt
- E05B17/2038—Securing, deadlocking or "dogging" the bolt in the fastening position not following the movement of the bolt moving rectilinearly
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B13/00—Devices preventing the key or the handle or both from being used
- E05B13/002—Devices preventing the key or the handle or both from being used locking the handle
- E05B13/004—Devices preventing the key or the handle or both from being used locking the handle by locking the spindle, follower, or the like
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
- E05B35/008—Locks for use with special keys or a plurality of keys ; keys therefor for simple tool-like keys
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C1/00—Fastening devices with bolts moving rectilinearly
- E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
- E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
- E05C1/16—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially in a plane substantially parallel to the wing or frame
- E05C1/163—Cylindrical or tubular latches
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C1/00—Fastening devices with bolts moving rectilinearly
- E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
- E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
Definitions
- the present application relates to a locking device, and specifically relates to a locking device with lockable spindle follower linkage.
- the spindle follower linkage of the locking device When a door furniture is removed from the door, the spindle follower linkage of the locking device will be exposed. The spindle follower linkage can then be manipulated. By inserting a suitable tool, the latch can be easily unlatched.
- the present application is directed to a locking device with a lockable spindle follower linkage, including: (a) a latch; (b) a latch linkage having one end coupled with the latch; (c) a spindle follower linkage coupled with another end of the latch linkage, the spindle follower linkage being rotatable about an axis of rotation between a locked position where the latch is in an extended position and an unlocked position where the latch is in a retracted position; (d) a locking block formed with an elongate pin hole parallel to and spaced apart from the axis of rotation; wherein the pin hole may include an outer open end and an inner open end, and wherein a diameter of the outer open end is the same as a diameter of the pin hole, and a diameter of the inner open end is smaller than the diameter of the pin hole; (e) a locking block cover attached to one side of the locking block where the outer open end of the pin hole is located, and the locking block cover is formed with a cover opening in alignment
- the locking block may be engageable with the spindle follower linkage by an engagement mechanism including a recess formed on the spindle follower linkage and a corresponding projection extending from the locking block and engageable with the recess.
- the pin may include an insert end adapted to be inserted into the pin hole, and a gripping end adapted to extend outwardly from the housing of the locking device to facilitate gripping of the pin by fingers of a user.
- the gripping end may be formed with an enlarged head.
- the latch, the latch linkage, the spindle follower linkage, the locking block and the pin may be made of metal.
- the present application is directed to a locking device, including: (a) a spindle follower linkage coupled with a latch, the spindle follower linkage being rotatable about an axis of rotation between a locked position where the latch is in an extended position and an unlocked position where the latch is in a retracted position; (b) a locking block formed with an elongate pin hole parallel to and spaced apart from the axis of rotation; (c) a pin insertable through an opening of a housing of the locking device and into the pin hole; and (d) a locking block spring provided in a transverse recess formed on the locking block transverse to the pin hole for exerting a force to bias the locking block in a first bias position where the pin is inserted through the opening of the housing and into the pin hole and the locking block is held by the pin and is disengaged from the spindle follower linkage, and a second bias position where the pin is removed from the pin hole and the locking block is pushed towards and engaged with the spin
- a spring unit may be held inside the pin hole to facilitate ejection of the pin from the pin hole.
- the spring unit may include a pin-actuating spring have two opposite ends and two steel balls disposed at the two opposite ends of the spring respectively.
- the pin hole may include an outer open end for passing therethrough the pin and an inner open end, and wherein a diameter of the outer open end may be the same as a diameter of the pin hole, and a diameter of the inner open end may be smaller than the diameter of the pin hole.
- the locking block may include a locking block cover attached to one side thereof where the outer open end of the pin hole may be located, and the locking block cover may be formed with a cover opening in alignment with the pin hole, wherein a diameter of the cover opening may be smaller than the diameter of the pin hole.
- the locking block may be engageable with the spindle follower linkage by an engagement mechanism.
- the engagement mechanism may include a recess formed on the spindle follower linkage and a corresponding projection extending from the locking block and engageable with the recess.
- the pin may include an insert end adapted to be inserted into the pin hole, and a gripping end adapted to extend outwardly from the housing of the locking device to facilitate gripping of the pin by fingers of a user.
- the gripping end may be formed with an enlarged head.
- the latch, the spindle follower linkage, the locking block and the pin may be made of metal.
- the present application is also directed to a door assembly including the locking device.
- FIG. 1 is a perspective view of the locking device according to an embodiment of the present application
- FIG. 2 is a perspective view of the locking device according to an embodiment of the present application, illustrating the latch being extended;
- FIG. 3 is a perspective view of the locking device according to an embodiment of the present application, illustrating the latch being retracted;
- FIG. 4 is a section view of the locking device according to an embodiment of the present application, illustrating the latch being retracted and the locking block being disengaged;
- FIG. 5 is a section view of the locking device according to an embodiment of the present application, illustrating the latch being extended and the locking block being disengaged;
- FIG. 6 is a section view of the locking device according to an embodiment of the present application, illustrating the latch locked in the extended position and the locking block being engaged;
- FIG. 7 is a side view of the locking device illustrating the latch being retracted and the locking block being disengaged with the pin being inserted in the pin hole;
- FIG. 8 is a side view of the locking device illustrating the latch being extended and the locking block being disengaged with the pin being inserted in the pin hole.
- FIG. 9 is a side view of the locking device illustrating the latch being extended and the locking block being engaged
- FIG. 10 is a perspective view of the cover of the locking device according to an embodiment of the present application.
- FIG. 11 is a perspective view of the spindle follower linkage of the locking device according to an embodiment of the present application.
- FIG. 12 is a perspective view of the locking block of the locking device according to an embodiment of the present application.
- FIG. 13 is a perspective view of the locking block cover of the locking device according to an embodiment of the present application.
- FIG. 14 is a side view of the pin of the locking device according to an embodiment of the present application.
- FIG. 15 is a side view of the pin spring of the locking device according to an embodiment of the present application.
- FIG. 16 is a side view of the steel ball of the locking device according to an embodiment of the present application.
- FIG. 17 is a side view of the locking block spring of the locking device according to an embodiment of the present application.
- FIG. 18 is a perspective view of the latch linkage of the locking device according to an embodiment of the present application.
- locking device with lockable spindle follower linkage is not limited to the precise embodiments described below and that various changes and modifications thereof may be effected by one skilled in the art without departing from the spirit or scope of the protection.
- elements and/or features of different illustrative embodiments may be combined with each other and/or substituted for each other within the scope of this disclosure and appended claims.
- FIGS. 1-9 show different views of a locking device according to an embodiment of the present application
- FIGS. 10-18 show various views of various parts of the locking device.
- the locking device may include a latch 7 h, a latch linkage 7 m and a spindle follower linkage 7 b.
- the latch 7 h may be a common door latch.
- the latch linkage 7 m may have two opposite ends. One end of the latch linkage 7 m may be coupled with the latch 7 h, and the other end of the latch linkage 7 m may be coupled with the spindle follower linkage 7 b.
- the spindle follower linkage 7 b can be rotatable about an axis of rotation X between a locked position where the latch 7 h is in a latched or extended position, as shown in FIG. 8 , and an unlocked position where the latch 7 h is in an unlatched or retracted position, as shown in FIG. 7 .
- the locking device may include a locking block 7 c formed with an elongate pin hole 7 p parallel to and spaced apart from the axis of rotation X.
- a pin 7 e may be insertable through an opening 7 q of a cover 7 a of a housing 7 r of the locking device and into the pin hole 7 p. The details of the pin 7 e will be described later.
- the locking device may further include a locking block spring 7 k.
- the locking block spring 7 k may be provided in a transverse recess 7 s formed on the locking block 7 c transverse to the pin hole 7 p.
- the locking block spring 7 k can exert a force to bias the locking block 7 c in a first bias position, as shown in FIGS. 5 and 8 , where the pin 7 e is inserted through the opening 7 q of the housing 7 r and into the pin hole 7 p and the locking block 7 c is held by the pin 7 e and is disengaged from the spindle follower linkage 7 b, and a second bias position, as shown in FIGS.
- the pin 7 e is inserted through the opening 7 q of the housing 7 r and into the pin hole 7 p and the locking block 7 c is held by the pin 7 e and is disengaged from the spindle follower linkage 7 b.
- the spindle follower linkage 7 b is free to rotate between the locked position where the latch 7 h is extended, and an unlocked position where the latch 7 h is retracted.
- the pin 7 e is removed from the pin hole 7 p and the locking block 7 c is pushed towards and engaged with the spindle follower linkage 7 b by the spring action of the locking block spring 7 k.
- the locking block 7 c prevents rotation of the spindle follower linkage 7 b, and therefore holds the spindle follower linkage 7 b in the locked position.
- the locking block 7 c can be engageable with the spindle follower linkage 7 b by any possible engagement mechanism.
- the engagement mechanism may include a recess 7 u formed on the spindle follower linkage 7 b and a corresponding projection 7 v extending from the locking block 7 c and engageable with the recess 7 u.
- the recess 7 u can be formed on the locking block 7 c instead, and the projection 7 v can be formed on the spindle follower linkage 7 b.
- both the recess 7 u and projection 7 v have a generally rectangular cross section.
- the locking device may further include a spring unit provided inside the pin hole 7 p to facilitate ejection of the pin 7 e from the pin hole 7 p.
- the spring unit may include a pin-actuating spring 7 f having two opposite ends and two steel balls 7 j disposed at the two opposite ends of the pin-actuating spring 7 f respectively.
- the pin hole 7 p may include an outer open end 7 w for passing therethrough the pin 7 e, and an inner open end 7 x.
- the diameter of the outer open end 7 w can be the same as the diameter of the pin hole 7 p, and the diameter of the inner open end 7 x can be smaller than the diameter of the pin hole 7 p.
- the locking block 7 c may further include a locking block cover 7 d attached to one side thereof where the outer open end 7 w of the pin hole 7 p is located.
- the locking block cover 7 d may be formed with a cover opening 7 y in alignment with the pin hole 7 p, and the diameter of the cover opening 7 y can be smaller than the diameter of the pin hole 7 p.
- the spring unit having the spring pin-actuating spring 7 f and the two steel balls 7 j can be securely held inside the pin hole 7 p.
- the pin 7 e may include an insert end 7 e 1 adapted to be inserted into the pin hole 7 p, and a gripping end 7 e 2 adapted to extend outwardly from the housing 7 r of the locking device to facilitate gripping of the pin 7 e by fingers of a user.
- the gripping end 7 e 2 can be formed with an enlarged head 7 z.
- FIG. 10 is a perspective view of the cover 7 a of the locking device according to an embodiment of the present application.
- the cover 7 a may be generally rectangular in shape and may be made from a metal plate.
- FIG. 11 is a perspective view of the spindle follower linkage 7 b of the locking device according to an embodiment of the present application.
- the spindle follower linkage 7 b may include openings for holding therein a shaft such as a door knob shaft.
- the spindle follower linkage 7 b may be made from a metal plate.
- FIG. 12 is a perspective view of the locking block 7 c of the locking device according to an embodiment of the present application.
- the locking block 7 c may be generally in the shape of a block formed with a pin hole 7 p and a projection 7 v.
- the locking block 7 c may also be made of metal.
- FIG. 13 is a perspective view of the locking block cover 7 d of the locking device according to an embodiment of the present application.
- the locking block cover 7 d is adapted to attach to one side of the locking block 7 c.
- the locking block cover 7 d may also be made of metal.
- FIG. 14 is a side view of the pin 7 e of the locking device according to an embodiment of the present application.
- the pin 7 e has a pin body with circular cross section and an enlarged pin head 7 z.
- the pin 7 e may be made of metal or other suitable material.
- FIG. 15 is a side view of the pin-actuating spring 7 f of the locking device according to an embodiment of the present application.
- the pin-actuating spring 7 f can be a coil spring. It is understood that the pin-actuating spring 7 f is so constructed that it can fit into the pin hole 7 p and can be actuated and compressed by the pin 7 e.
- FIG. 16 is a side view of the steel ball 7 j of the locking device according to an embodiment of the present application.
- the steel ball 7 j has a size that can fit in the pin hole 7 p.
- FIG. 17 is a side view of the locking block spring 7 k of the locking device according to an embodiment of the present application. It can be seen that the locking block spring 7 k is shorter than the pin-actuating spring 7 f.
- the locking block spring 7 k can be a coil spring or other appropriate spring such as a spring plate.
- FIG. 18 is a perspective view of the latch linkage 7 m of the locking device according to an embodiment of the present application.
- the latch linkage 7 m may also be made of metal.
Abstract
Description
- This application is a Continuation Application of U.S. patent application Ser. No. 14/821,841 filed on Aug. 10, 2015 which claims the benefit of U.S. Provisional Patent Application No. 62/039,902, filed Aug. 20, 2014, the entire content of which is hereby incorporated by reference.
- The present application relates to a locking device, and specifically relates to a locking device with lockable spindle follower linkage.
- When a door furniture is removed from the door, the spindle follower linkage of the locking device will be exposed. The spindle follower linkage can then be manipulated. By inserting a suitable tool, the latch can be easily unlatched.
- There is a need to provide a locking device with lockable spindle follower linkage to prevent a latch from being unlatched and to lock the latch in its latched position.
- In one aspect, the present application is directed to a locking device with a lockable spindle follower linkage, including: (a) a latch; (b) a latch linkage having one end coupled with the latch; (c) a spindle follower linkage coupled with another end of the latch linkage, the spindle follower linkage being rotatable about an axis of rotation between a locked position where the latch is in an extended position and an unlocked position where the latch is in a retracted position; (d) a locking block formed with an elongate pin hole parallel to and spaced apart from the axis of rotation; wherein the pin hole may include an outer open end and an inner open end, and wherein a diameter of the outer open end is the same as a diameter of the pin hole, and a diameter of the inner open end is smaller than the diameter of the pin hole; (e) a locking block cover attached to one side of the locking block where the outer open end of the pin hole is located, and the locking block cover is formed with a cover opening in alignment with the pin hole, wherein a diameter of the cover opening is smaller than the diameter of the pin hole; (f) a pin insertable through an opening of a housing of the locking device and the cover opening and into the pin hole; (g) a spring unit held inside the pin hole to facilitate ejection of the pin from the pin hole, the spring unit comprising a pin-actuating spring have two opposite ends and two steel balls disposed at the two opposite ends of the spring respectively; and (h) a locking block spring provided in a transverse recess formed on the locking block transverse to the pin hole for exerting a force to bias the locking block in a first bias position where the pin is inserted through the opening of the housing and into the pin hole and the locking block is held by the pin and is disengaged from the spindle follower linkage, and a second bias position where the pin is removed from the pin hole and the locking block is pushed towards and engaged with the spindle follower linkage, thereby preventing rotation of the spindle follower linkage and holding it in the locked position.
- The locking block may be engageable with the spindle follower linkage by an engagement mechanism including a recess formed on the spindle follower linkage and a corresponding projection extending from the locking block and engageable with the recess.
- The pin may include an insert end adapted to be inserted into the pin hole, and a gripping end adapted to extend outwardly from the housing of the locking device to facilitate gripping of the pin by fingers of a user. The gripping end may be formed with an enlarged head.
- The latch, the latch linkage, the spindle follower linkage, the locking block and the pin may be made of metal.
- In another aspect, the present application is directed to a locking device, including: (a) a spindle follower linkage coupled with a latch, the spindle follower linkage being rotatable about an axis of rotation between a locked position where the latch is in an extended position and an unlocked position where the latch is in a retracted position; (b) a locking block formed with an elongate pin hole parallel to and spaced apart from the axis of rotation; (c) a pin insertable through an opening of a housing of the locking device and into the pin hole; and (d) a locking block spring provided in a transverse recess formed on the locking block transverse to the pin hole for exerting a force to bias the locking block in a first bias position where the pin is inserted through the opening of the housing and into the pin hole and the locking block is held by the pin and is disengaged from the spindle follower linkage, and a second bias position where the pin is removed from the pin hole and the locking block is pushed towards and engaged with the spindle follower linkage, thereby preventing rotation of the spindle follower linkage and holding it in the locked position.
- A spring unit may be held inside the pin hole to facilitate ejection of the pin from the pin hole. The spring unit may include a pin-actuating spring have two opposite ends and two steel balls disposed at the two opposite ends of the spring respectively.
- The pin hole may include an outer open end for passing therethrough the pin and an inner open end, and wherein a diameter of the outer open end may be the same as a diameter of the pin hole, and a diameter of the inner open end may be smaller than the diameter of the pin hole. The locking block may include a locking block cover attached to one side thereof where the outer open end of the pin hole may be located, and the locking block cover may be formed with a cover opening in alignment with the pin hole, wherein a diameter of the cover opening may be smaller than the diameter of the pin hole.
- The locking block may be engageable with the spindle follower linkage by an engagement mechanism. The engagement mechanism may include a recess formed on the spindle follower linkage and a corresponding projection extending from the locking block and engageable with the recess.
- The pin may include an insert end adapted to be inserted into the pin hole, and a gripping end adapted to extend outwardly from the housing of the locking device to facilitate gripping of the pin by fingers of a user. The gripping end may be formed with an enlarged head.
- The latch, the spindle follower linkage, the locking block and the pin may be made of metal.
- The present application is also directed to a door assembly including the locking device.
- Although the locking device with lockable spindle follower linkage is shown and described with respect to certain embodiments, it is obvious that equivalents and modifications will occur to others skilled in the art upon the reading and understanding of the specification. The locking device with lockable spindle follower linkage in the present application includes all such equivalents and modifications, and is limited only by the scope of the claims.
- Specific embodiments of the locking device with lockable spindle follower linkage will now be described by way of example with reference to the accompanying drawings wherein:
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FIG. 1 is a perspective view of the locking device according to an embodiment of the present application; -
FIG. 2 is a perspective view of the locking device according to an embodiment of the present application, illustrating the latch being extended; -
FIG. 3 is a perspective view of the locking device according to an embodiment of the present application, illustrating the latch being retracted; -
FIG. 4 is a section view of the locking device according to an embodiment of the present application, illustrating the latch being retracted and the locking block being disengaged; -
FIG. 5 is a section view of the locking device according to an embodiment of the present application, illustrating the latch being extended and the locking block being disengaged; -
FIG. 6 is a section view of the locking device according to an embodiment of the present application, illustrating the latch locked in the extended position and the locking block being engaged; -
FIG. 7 is a side view of the locking device illustrating the latch being retracted and the locking block being disengaged with the pin being inserted in the pin hole; -
FIG. 8 is a side view of the locking device illustrating the latch being extended and the locking block being disengaged with the pin being inserted in the pin hole. -
FIG. 9 is a side view of the locking device illustrating the latch being extended and the locking block being engaged; -
FIG. 10 is a perspective view of the cover of the locking device according to an embodiment of the present application; -
FIG. 11 is a perspective view of the spindle follower linkage of the locking device according to an embodiment of the present application; -
FIG. 12 is a perspective view of the locking block of the locking device according to an embodiment of the present application; -
FIG. 13 is a perspective view of the locking block cover of the locking device according to an embodiment of the present application; -
FIG. 14 is a side view of the pin of the locking device according to an embodiment of the present application; -
FIG. 15 is a side view of the pin spring of the locking device according to an embodiment of the present application; -
FIG. 16 is a side view of the steel ball of the locking device according to an embodiment of the present application; -
FIG. 17 is a side view of the locking block spring of the locking device according to an embodiment of the present application; and -
FIG. 18 is a perspective view of the latch linkage of the locking device according to an embodiment of the present application. - Reference will now be made in detail to a preferred embodiment of the locking device with lockable spindle follower linkage, examples of which are also provided in the following description. Exemplary embodiments of the locking device with lockable spindle follower linkage are described in detail, although it will be apparent to those skilled in the relevant art that some features that are not particularly important to an understanding of the locking device with lockable spindle follower linkage may not be shown for the sake of clarity.
- Furthermore, it should be understood that the locking device with lockable spindle follower linkage is not limited to the precise embodiments described below and that various changes and modifications thereof may be effected by one skilled in the art without departing from the spirit or scope of the protection. For example, elements and/or features of different illustrative embodiments may be combined with each other and/or substituted for each other within the scope of this disclosure and appended claims.
- It should be noted that throughout the specification and claims herein, when one element is said to be “coupled” or “connected” to another, this does not necessarily mean that one element is fastened, secured, or otherwise attached to another element. Instead, the term “coupled” or “connected” means that one element is either connected directly or indirectly to another element or is in mechanical or electrical communication with another element.
-
FIGS. 1-9 show different views of a locking device according to an embodiment of the present application, andFIGS. 10-18 show various views of various parts of the locking device. - As best illustrated in
FIGS. 4 and 8 , the locking device may include alatch 7 h, alatch linkage 7 m and aspindle follower linkage 7 b. Thelatch 7 h may be a common door latch. Thelatch linkage 7 m may have two opposite ends. One end of thelatch linkage 7 m may be coupled with thelatch 7 h, and the other end of thelatch linkage 7 m may be coupled with thespindle follower linkage 7 b. - The
spindle follower linkage 7 b can be rotatable about an axis of rotation X between a locked position where thelatch 7 h is in a latched or extended position, as shown inFIG. 8 , and an unlocked position where thelatch 7 h is in an unlatched or retracted position, as shown inFIG. 7 . - The locking device may include a
locking block 7 c formed with anelongate pin hole 7 p parallel to and spaced apart from the axis of rotation X. Apin 7 e may be insertable through an opening 7 q of acover 7 a of ahousing 7 r of the locking device and into thepin hole 7 p. The details of thepin 7 e will be described later. - The locking device may further include a
locking block spring 7 k. Thelocking block spring 7 k may be provided in a transverse recess 7 s formed on thelocking block 7 c transverse to thepin hole 7 p. Thelocking block spring 7 k can exert a force to bias thelocking block 7 c in a first bias position, as shown inFIGS. 5 and 8 , where thepin 7 e is inserted through the opening 7 q of thehousing 7 r and into thepin hole 7 p and thelocking block 7 c is held by thepin 7 e and is disengaged from thespindle follower linkage 7 b, and a second bias position, as shown inFIGS. 6 and 9 , where thepin 7 e is removed from thepin hole 7 p and thelocking block 7 c is pushed towards and engaged with thespindle follower linkage 7 b. When thelocking block 7 c is engaged with thespindle follower linkage 7 b, thelocking block 7 c prevents rotation of thespindle follower linkage 7 b, and therefore holds thespindle follower linkage 7 b in the locked position. - In normal operation, the
pin 7 e is inserted through the opening 7 q of thehousing 7 r and into thepin hole 7 p and thelocking block 7 c is held by thepin 7 e and is disengaged from thespindle follower linkage 7 b. Thespindle follower linkage 7 b is free to rotate between the locked position where thelatch 7 h is extended, and an unlocked position where thelatch 7 h is retracted. - To lock the
spindle follower linkage 7 b, thepin 7 e is removed from thepin hole 7 p and thelocking block 7 c is pushed towards and engaged with thespindle follower linkage 7 b by the spring action of thelocking block spring 7 k. When thelocking block 7 c is engaged with thespindle follower linkage 7 b, thelocking block 7 c prevents rotation of thespindle follower linkage 7 b, and therefore holds thespindle follower linkage 7 b in the locked position. - The
locking block 7 c can be engageable with thespindle follower linkage 7 b by any possible engagement mechanism. According to the illustrated embodiment, the engagement mechanism may include arecess 7 u formed on thespindle follower linkage 7 b and acorresponding projection 7 v extending from thelocking block 7 c and engageable with therecess 7 u. It is understood that therecess 7 u can be formed on thelocking block 7 c instead, and theprojection 7 v can be formed on thespindle follower linkage 7 b. In the present embodiment, both therecess 7 u andprojection 7 v have a generally rectangular cross section. - The locking device may further include a spring unit provided inside the
pin hole 7 p to facilitate ejection of thepin 7 e from thepin hole 7 p. According to the illustrated embodiment, the spring unit may include a pin-actuatingspring 7 f having two opposite ends and twosteel balls 7 j disposed at the two opposite ends of the pin-actuatingspring 7 f respectively. - According to the illustrated embodiment, the
pin hole 7 p may include an outeropen end 7 w for passing therethrough thepin 7 e, and an inneropen end 7 x. The diameter of the outeropen end 7 w can be the same as the diameter of thepin hole 7 p, and the diameter of the inneropen end 7 x can be smaller than the diameter of thepin hole 7 p. - The
locking block 7 c may further include alocking block cover 7 d attached to one side thereof where the outeropen end 7 w of thepin hole 7 p is located. The lockingblock cover 7 d may be formed with acover opening 7 y in alignment with thepin hole 7 p, and the diameter of thecover opening 7 y can be smaller than the diameter of thepin hole 7 p. - With the above-mentioned construction of the
pin hole 7 p and the lockingblock cover 7 d, the spring unit having the spring pin-actuatingspring 7 f and the twosteel balls 7 j can be securely held inside thepin hole 7 p. - As depicted in
FIG. 14 , thepin 7 e may include aninsert end 7 e 1 adapted to be inserted into thepin hole 7 p, and agripping end 7 e 2 adapted to extend outwardly from thehousing 7 r of the locking device to facilitate gripping of thepin 7 e by fingers of a user. According to the illustrated embodiment, thegripping end 7 e 2 can be formed with anenlarged head 7 z. -
FIG. 10 is a perspective view of thecover 7 a of the locking device according to an embodiment of the present application. Thecover 7 a may be generally rectangular in shape and may be made from a metal plate. -
FIG. 11 is a perspective view of thespindle follower linkage 7 b of the locking device according to an embodiment of the present application. Thespindle follower linkage 7 b may include openings for holding therein a shaft such as a door knob shaft. Thespindle follower linkage 7 b may be made from a metal plate. -
FIG. 12 is a perspective view of thelocking block 7 c of the locking device according to an embodiment of the present application. Thelocking block 7 c may be generally in the shape of a block formed with apin hole 7 p and aprojection 7 v. Thelocking block 7 c may also be made of metal. -
FIG. 13 is a perspective view of the lockingblock cover 7 d of the locking device according to an embodiment of the present application. The lockingblock cover 7 d is adapted to attach to one side of thelocking block 7 c. The lockingblock cover 7 d may also be made of metal. -
FIG. 14 is a side view of thepin 7 e of the locking device according to an embodiment of the present application. Thepin 7 e has a pin body with circular cross section and anenlarged pin head 7 z. Thepin 7 e may be made of metal or other suitable material. -
FIG. 15 is a side view of the pin-actuatingspring 7 f of the locking device according to an embodiment of the present application. The pin-actuatingspring 7 f can be a coil spring. It is understood that the pin-actuatingspring 7 f is so constructed that it can fit into thepin hole 7 p and can be actuated and compressed by thepin 7 e. -
FIG. 16 is a side view of thesteel ball 7 j of the locking device according to an embodiment of the present application. Thesteel ball 7 j has a size that can fit in thepin hole 7 p. -
FIG. 17 is a side view of thelocking block spring 7 k of the locking device according to an embodiment of the present application. It can be seen that thelocking block spring 7 k is shorter than the pin-actuatingspring 7 f. Thelocking block spring 7 k can be a coil spring or other appropriate spring such as a spring plate. -
FIG. 18 is a perspective view of thelatch linkage 7 m of the locking device according to an embodiment of the present application. Thelatch linkage 7 m may also be made of metal. - While the locking device with lockable spindle follower linkage has been shown and described with particular references to a number of preferred embodiments thereof, it should be noted that various other changes or modifications may be made without departing from the scope of the appended claims.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/964,055 US10876320B2 (en) | 2014-08-20 | 2018-04-26 | Locking device with lockable spindle follower linkage |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201462039902P | 2014-08-20 | 2014-08-20 | |
US14/821,841 US9957731B2 (en) | 2014-08-20 | 2015-08-10 | Locking device with lockable spindle follower linkage |
US15/964,055 US10876320B2 (en) | 2014-08-20 | 2018-04-26 | Locking device with lockable spindle follower linkage |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/821,841 Continuation US9957731B2 (en) | 2014-08-20 | 2015-08-10 | Locking device with lockable spindle follower linkage |
Publications (2)
Publication Number | Publication Date |
---|---|
US20180245370A1 true US20180245370A1 (en) | 2018-08-30 |
US10876320B2 US10876320B2 (en) | 2020-12-29 |
Family
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/821,841 Active 2036-10-28 US9957731B2 (en) | 2014-08-20 | 2015-08-10 | Locking device with lockable spindle follower linkage |
US15/964,055 Active 2036-07-26 US10876320B2 (en) | 2014-08-20 | 2018-04-26 | Locking device with lockable spindle follower linkage |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/821,841 Active 2036-10-28 US9957731B2 (en) | 2014-08-20 | 2015-08-10 | Locking device with lockable spindle follower linkage |
Country Status (4)
Country | Link |
---|---|
US (2) | US9957731B2 (en) |
CN (1) | CN105386656B (en) |
GB (1) | GB2531869B (en) |
HK (1) | HK1224349A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109573375B (en) * | 2019-01-09 | 2024-04-02 | 上海鸿研物流技术有限公司 | Container and locking device thereof |
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2015
- 2015-08-06 GB GB1513889.4A patent/GB2531869B/en active Active
- 2015-08-10 US US14/821,841 patent/US9957731B2/en active Active
- 2015-08-20 CN CN201510513028.XA patent/CN105386656B/en active Active
-
2016
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2018
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US5141268A (en) * | 1991-09-25 | 1992-08-25 | Gary Keller | Safety door latch bolt |
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Also Published As
Publication number | Publication date |
---|---|
GB2531869A (en) | 2016-05-04 |
US20160053520A1 (en) | 2016-02-25 |
CN105386656A (en) | 2016-03-09 |
GB2531869B (en) | 2017-10-11 |
US10876320B2 (en) | 2020-12-29 |
CN105386656B (en) | 2017-12-26 |
HK1224349A1 (en) | 2017-08-18 |
GB201513889D0 (en) | 2015-09-23 |
US9957731B2 (en) | 2018-05-01 |
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